表 4. Multivariate regression analysis of factors affecting PND in patients under general anesthesia for colon cancer.

多因素回归分析结肠癌全身麻醉患者PND的影响因素

Index	β	SE	Wald χ2	P	OR	95% CI
SE: standard error; OR: odds ratio. All other abbreviations in the table are the same as those in Table 1.
Age	0.175	0.044	3.966	< 0.001	1.191	1.093-1.299
Operation time	－0.017	0.018	－0.935	0.350	0.983	0.948-1.019
Depth of anesthesia	1.453	0.611	2.379	0.017	4.276	1.292-14.153
Intraoperative bleeding	0.014	0.086	0.167	0.867	1.015	0.857-1.201
Mean intraoperative rSO2	－0.510	0.244	－2.091	0.037	0.600	0.372-0.968
Postoperative analgesic protocol	1.635	0.796	0.244	0.624	0.675	0.142-3.211
MPV	1.524	0.328	4.645	< 0.001	4.592	2.413-8.736
PDW	4.136	1.619	2.555	0.011	62.575	2.620-94.220
VAS	0.607	0.187	3.245	0.001	1.835	1.272-2.647
PSQI	0.491	0.133	3.696	< 0.001	1.634	1.259-2.119
Constant	－42.467	8.013	－5.300	< 0.001	-